sathandoff.h
上传用户:rrhhcc
上传日期:2015-12-11
资源大小:54129k
文件大小:4k
- /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
- /*
- * Copyright (c) 1999 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the MASH Research
- * Group at the University of California Berkeley.
- * 4. Neither the name of the University nor of the Research Group may be
- * used to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#) $Header: /cvsroot/nsnam/ns-2/satellite/sathandoff.h,v 1.5 1999/10/26 17:35:06 tomh Exp $
- *
- * Contributed by Tom Henderson, UCB Daedalus Research Group, June 1999
- */
- #ifndef ns_sathandoff_h
- #define ns_sathandoff_h
- #include "timer-handler.h"
- #include "rng.h"
- #include "node.h"
- #include <math.h>
- // Handoff manager types
- #define LINKHANDOFFMGR_SAT 1
- #define LINKHANDOFFMGR_TERM 2
- class TermLinkHandoffMgr;
- class SatLinkHandoffMgr;
- class TermHandoffTimer : public TimerHandler {
- public:
- TermHandoffTimer(TermLinkHandoffMgr *a) : TimerHandler() {a_ = a; }
- protected:
- virtual void expire(Event *e);
- TermLinkHandoffMgr *a_;
- };
- class SatHandoffTimer : public TimerHandler {
- public:
- SatHandoffTimer(SatLinkHandoffMgr *a) : TimerHandler() {a_ = a; }
- protected:
- virtual void expire(Event *e);
- SatLinkHandoffMgr *a_;
- };
- class SatLinkHead;
- class SatNode;
- class LinkHandoffMgr : public TclObject {
- public:
- LinkHandoffMgr();
- void start() { handoff(); }
- Node* node() { return node_; } // backpointer to node
- virtual int handoff() { return 0; }
- int command(int argc, const char*const* argv);
- SatNode* get_peer(SatLinkHead*); // helper function for handoff
- protected:
- Node* node_;
- static RNG handoff_rng_;
- static int handoff_randomization_;
- //
- // The remaining functions are helper functions for handoff
- //
- SatLinkHead* get_peer_next_linkhead(SatNode*);
- SatLinkHead* get_peer_linkhead(SatLinkHead*);
- };
- class SatLinkHandoffMgr : public LinkHandoffMgr {
- public:
- SatLinkHandoffMgr();
- int handoff();
- protected:
- SatHandoffTimer timer_;
- static double latitude_threshold_;
- static double longitude_threshold_;
- static int sat_handoff_int_;
- };
- class TermLinkHandoffMgr : public LinkHandoffMgr {
- public:
- TermLinkHandoffMgr();
- int handoff();
- protected:
- TermHandoffTimer timer_;
- static double elevation_mask_;
- static int term_handoff_int_;
- };
- #endif